Combined Use of Mathematical Optimization and Design of Experiments for the Maximization of Profit in a Four-Echelon Supply Chain

Table 3

Analysis of variance for profit (adjusted model).

Source	Sum of squares	df	Mean square	test	value
B: quality		1		2041.32	0.0000
C: delivery time		1		380.39	0.0000
Total error		52
Total (corr.)		54

-squared = 97.8979 percent; -squared (adjusted by d.f.) = 97.817 percent; standard error of est. = 43704.5; average absolute error = 35708.6; Durbin-Watson st. = 1.72701 (); residual autocorrelation of Lag 1 = 0.13133.